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Dynamic Positioning using Deep Reinforcement Learning
(Journal article; Peer reviewed, 2021)This paper demonstrates the implementation and performance testing of a Deep Reinforcement Learning based control scheme used for Dynamic Positioning of a marine surface vessel. The control scheme encapsulated motion control ... -
Dynamic probabilistic risk assessment of decision-making in emergencies for complex systems, case study: Dynamic positioning drilling unit
(Peer reviewed; Journal article, 2021)Decision-making in emergency situations is a risky and uncertain process due to the limited information and lack of time. Some key problem parameters, such as the time required to complete important response tasks, must ... -
Dynamic response analysis of a catamaran installation vessel during the positioning of a wind turbine assembly onto a spar foundation
(Journal article; Peer reviewed, 2018)Installation of floating wind turbines is a challenging task. The time and costs are closely related to the installation method chosen. This paper investigates the performance of an efficient installation concept – a ... -
Dynamic response analysis of a catamaran wind turbine installation vessel with focus on the transportation stage
(Master thesis, 2018)The United Nations have agreed on the Sustainable Development Goals for the world where one of them is to achieve affordable and clean energy for the whole world for which wind energy would be a good option. Additionally, ... -
Dynamic Response Analysis of a Floating Bridge Subjected to Environmental Loads
(Chapter, 2018)Designing floating bridges for wide and deep fjords is very challenging. The floating bridge is subjected to wind, wave, and current loads. All these loads and corresponding load effects should be properly evaluated, e.g. ... -
Dynamic response analysis of a semi-submersible floating wind turbines under combined ice and aerodynamic loads
(Master thesis, 2021)This thesis aims to analyze the dynamic response of a semi-submersible floating wind turbine under combined wind and ice loads through a coupled analysis. The importance of the topic is due to the increased interest and ... -
Dynamic Response Analysis of a Spar Floating Wind Turbine in Level Ice with Varying Thickness
(Master thesis, 2016)This master thesis is the final step before graduation from the Offshore Engineering track of the European Wind Energy Master. Both the Diploma award universities contributed significantly in the completion if this work ... -
Dynamic response analysis of a tension-leg floating wind turbine
(Master thesis, 2011)Offshore wind energy has a significant potential and for increasing water depths it may be most cost effective to exploit this potential by using floating wind turbines. Many concepts have been suggested but it is not yet ... -
Dynamic Response Analysis of an Offshore Wind Turbine
(Master thesis, 2011)The offshore wind power is an attractive renewable energy resource. To improve the wind power generation capacity, there is a strong desire for offshore wind turbine to go to deep waters. For offshore fixed wind turbine, ... -
Dynamic response analysis of floating wind turbines with emphasis on vertical axis rotors
(Chapter; Peer reviewed, 2016)Large floating wind turbines are feasible for offshore application. Due to the commercial success onshore and nearshore, floating horizontal axis wind turbines (HAWTs) are now being widely studied. However, floating vertical ... -
Dynamic Response Analysis of Three Floating Wind Turbine Concepts with a Two-Bladed Darrieus Rotor
(Journal article; Peer reviewed, 2015)Recently, interest in the development of floating vertical axis wind turbines (FVAWTs) has been increasing, since FVAWTs might prove to be one of the optimal configurations in deep waters. In this study, a FVAWT with a 5 ... -
Dynamic Response Analysis of a Spar Type Floating Wind Turbine
(Master thesis, 2011)Wind power is a large natural source for renewable energy, and many countries have shown interest in establishing floating offshore wind parks. There are many advantages with floating offshore wind turbines, but also many ... -
Dynamic response characteristics of the 67-type railway pontoon bridge
(Peer reviewed; Journal article, 2022)In China at present, the 67-type railway pontoon bridge is part of the main reserve standard equipment that can be utilized for traffic emergency of cross-river bridges. Based on the potential flow theory and boundary ... -
Dynamic Response of a Floating Bridge Structure
(Chapter; Peer reviewed, 2016)A theoretical overview of the stochastic dynamic analysis of a floating bridge structure is presented. Emphasis is on the wave-induced response and the waves on the sea surface are idealized as a zero mean stationary ... -
Dynamic Response of A Large-Diameter Monopile Considering 35-Hour Storm Conditions
(Journal article; Peer reviewed, 2019)As a part of the assessment of foundation resistance for monopiles, several offshore wind standards prescribe symmetric 35-hour (or 42-hour) storm sequences in terms of wind speed and significant wave height. The temporal ... -
Dynamic response of a monopile wind turbine in waves: Experimental uncertainty analysis for validation of numerical tools
(Journal article; Peer reviewed, 2019)The responses of a monopile offshore wind turbine subjected to irregular wave loads are investigated numerically and experimentally, considering a range of sea states. An extensive experimental campaign was carried out on ... -
Dynamic Response of Flexible Pipes Considering Different Damping Models
(Master thesis, 2014)Flexible pipe is a layered structure composed of plastic and steel materials. Under a large bending moment, the pipe layers may slide relative to each other due to internal friction. The moment curvature relationship for ... -
Dynamic Response of Flexible Pipes During Installation
(Master thesis, 2013)This paper is referring to performing dynamic analysis for an installation scenario with the bi-linear assumption for the bending moment stiffness, which is the governing component stiffness for the curvature at the touching ... -
Dynamic Response of Flexible Risers due to Unsteady Slug Flow
(Doctoral thesis at NTNU;2015:182, Doctoral thesis, 2015)In this work the influence of unsteady slug flow on the dynamic response of flexible risers is analysed using a computational tool consisting of one program for prediction of slug flow development, and another program ... -
Dynamic Response of Floating Wind Turbines
(Master thesis, 2013)In this thesis the extreme values of tension in the mooring lines on Hywind Demo is investigated. Hywind Demo is a floating wind turbine developed by Statoil ASA. The aim of the study is to evaluate the application of the ...